Classification practice of import and export commodities Inspection practice of import and export commodities ClassIfication and Training of Import and Export Commodities 并列题名：ClassIfication and Training of Import and Export Commodities Classification of import and export goods Practice of import and export operation Classification of plant communities 并列题名：Legal practice of import and export trade compliance Legal practice of import and export trade compliance 并列题名：Legal practice on import and export customs clearance